DE19704862A1 - System for transferring data - Google Patents
System for transferring dataInfo
- Publication number
- DE19704862A1 DE19704862A1 DE19704862A DE19704862A DE19704862A1 DE 19704862 A1 DE19704862 A1 DE 19704862A1 DE 19704862 A DE19704862 A DE 19704862A DE 19704862 A DE19704862 A DE 19704862A DE 19704862 A1 DE19704862 A1 DE 19704862A1
- Authority
- DE
- Germany
- Prior art keywords
- stations
- bus
- wake
- level
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40039—Details regarding the setting of the power status of a node according to activity on the bus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40032—Details regarding a bus interface enhancer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Communication Control (AREA)
- Power Sources (AREA)
Description
Die Erfindung betrifft ein elektronisches System zum Übertragung von Daten zwischen einer Anzahl von Stationen, wobei die Stationen mittels einem Bus bestehend aus einem Leiter oder mehreren Leitern miteinander verbunden sind und die Daten beispielsweise mittels unterschiedlicher Signalpegel kodiert über den Bus übertragen.The invention relates to an electronic system for the transmission of data between a number of stations, the stations using a bus consisting of a conductor or several conductors are connected to each other and the data is encoded, for example, using different signal levels via the bus transfer.
Das System mit einer Anzahl von Stationen befindet sich dabei im wesentlichen in zwei unterschiedlichen Zuständen. Im normalen Zustand ist die Kommunikation zwischen allen Stationen möglich, das heißt, alle Stationen können ein von jeder anderen beliebigen Station gesendetes Telegramm korrekt empfangen, wobei eine sendende Station die entsprechenden Signalpegel mittels eines Bustreibers auf dem Bus erzwingt. Im Ruhebetrieb stellt sich auf dem Bus ein Ruhepegel ein und die Kommunikation ist nicht möglich, jedoch kann ein von einer beliebigen Station gesendetes Telegramm von den anderen Stationen als Aufforderung zum Wechsel des Systemes in den normalen Zustand verstanden werden, wodurch das System über den Bus aus dem Ruhebetrieb weckbar ist und die Kommunikation wieder aufgenommen werden kann.The system with a number of stations is essentially located in two different states. Communication is in the normal state possible between all stations, that is, all stations can be one of each Telegram received correctly sent to any other station, whereby one sending station the corresponding signal levels using a bus driver on the Bus forces. In idle mode, a quiet level is set on the bus and the Communication is not possible, however one can be from any station Telegram sent by the other stations as a request to change of the system to be understood in the normal state, causing the system can be woken up from the idle mode via the bus and the communication is restored can be included.
Diese Art von Systemen sind bereits bekannt, beispielsweise aus DE 195 23 031 A1.This type of system is already known, for example from DE 195 23 031 A1.
In den typischen Anwendungen für diese Systeme ist die Anzahl der Stationen hoch, und es besteht ein Zwang zum Sparen der elektrischen Energie, z. B. bei Kraftfahrzeugen im geparkten Zustand, so daß von dem Ruhebetrieb möglichst Gebrauch zu machen ist. Gleichzeitig besteht aber in der Regel die Anforderung, daß auch während des Ruhebetriebes ein Teil der Stationen gelegentlich miteinander kommunizieren möchten. Der zeitweilige normale Betrieb des gesamten Systemes mit allen Stationen wäre für diesen Zweck hinsichtlich des Energieverbrauches nicht tragbar.In the typical applications for these systems, the number of stations is high, and there is a compulsion to save electrical energy, e.g. B. at Motor vehicles in the parked state, so that the rest mode as possible Is to be used. At the same time, there is usually the requirement that sometimes even during idle operation some of the stations want to communicate. The temporary normal operation of the entire system with all stations would not be for this purpose in terms of energy consumption portable.
Die Aufgabe der Erfindung ist es, einen Teilsystembetrieb zu ermöglichen, bei dem der eine Teil der Stationen miteinander kommuniziert, während der verbleibende Teil der Stationen im Ruhebetrieb bleibt und die fortwährende Kommunikation des einen Teils der Stationen nicht als Aufforderung versteht, geweckt zu werden.The object of the invention is to enable subsystem operation in which some of the stations communicate with each other while the remaining one Part of the stations remains idle and the continuous communication of the does not understand part of the stations as an invitation to be woken up.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst daß neben den bestehenden Signalpegeln ein zusätzlicher Weckpegel definiert wird, der von den Signalpegeln für alle Stationen klar unterscheidbar ist. Stellt sich bei einer Kommunikation dieser Weckpegel nicht ein, bleiben die Stationen, die bereits im Ruhebetrieb sind, weiterhin im Ruhebetrieb.This object is achieved in that in addition to the existing An additional wake-up level is defined by the signal levels is clearly distinguishable for all stations. This arises when communication occurs Wake up level does not remain, the stations that are already in idle mode remain still in idle mode.
Um einen Teilsystembetrieb aus einem Ruhebetrieb heraus zu realisieren, werden zunächst alle Stationen kurzzeitig durch Übertragen eines Telegramms geweckt, indem der Bustreiber die Weckpegel erzwingt. Das Telegramm kann ggfs. den Teilnehmerkreis für den Teilsystembetrieb festlegen, so daß die nicht angesprochenen Stationen sofort wieder in den Ruhebetrieb wechseln können. Die weitere Kommunikation im Teilsystembetrieb erfolgt nun mit Signalpegeln.In order to implement a partial system operation from an idle mode first of all briefly wake up all stations by transmitting a telegram, by the bus driver forcing the alarm levels. The telegram can, if necessary Specify the group of participants for subsystem operation so that those not addressed Stations can switch back to idle mode immediately. The further one Communication in subsystem operation now takes place with signal levels.
Um Verwechslungsmöglichkeiten zu verhindern und die Systemkonsistenz zu erhöhen, kann der Weckpegel logisch identisch wie ein Signalpegel interpretiert werden, so daß während des normalen Betriebs ein Telegramm, welches von einer Station mittels eines versehentlich mit Weckpegeln agierenden Bustreibers gesendet wurde, von allen Stationen gleichermaßen korrekt empfangen wird, als hätte der Bustreiber die normalen Signalpegel verwendet.To avoid confusion and the system consistency increase, the wake-up level can be interpreted logically in the same way as a signal level be so that during normal operation a telegram, which is from a Station sent by means of a bus driver accidentally operating with wake-up levels was received correctly by all stations equally, as if the Bus drivers used the normal signal levels.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen Embodiments of the invention are described below with reference to the drawing explained in more detail. Show it
Fig. 1 ein System mit mehreren Stationen, die über einen Bus verbunden sind, Fig. 1 shows a system having a plurality of stations which are connected via a bus,
Fig. 2 schematisch den Aufbau einer Station, Fig. 2 schematically shows the structure of a station,
Fig. 3 verschiedene Signalpegel und Schwellenwerte, Fig. 3 different signal levels and threshold values,
Fig. 4 schematisch den Aufbau eines Bustreibers in einer Station. Fig. 4 shows schematically the structure of a bus driver in a station.
In einem System sind gemäß Fig. 1 eine Anzahl von Stationen 14, 15, 16 mit einem Bus 11 verbunden, über den Daten übertragen werden.In a system 1 are shown in FIG. A number of stations 14, 15, 16 connected to a bus 11, are transmitted via the data.
In jeder Station, beispielsweise in der Station 14, befindet sich gemäß Fig. 2 mindestens ein Bustreiber 21, eine Schaltung 22 zur Abwicklung eines Protokolls zur sicheren Übertragung der einzelnen Telegramme und mindestens eine Steuerschaltung 23 zur Abwicklung anwendungsbezogener Aufgaben. Der Bustreiber wandelt die über Leitung 24 von der Protokollschaltung 22 kommenden seriellen Daten in Signalpegel oder Weckpegel auf dem Bus um. Der Bustreiber kann über Leitungen 26 und 27 in den Ruhebetrieb, den normalen Betrieb oder den Weckbetrieb versetzt werden. Von dem Bus empfangene Signale werden vom Bustreiber als Daten über Leitung 25 zur weiteren Verarbeitung an die Protokollschaltung 22 übertragen, die die Daten an die Steuerschaltung 23 weiterleitet. Außerdem empfängt die Protokollschaltung Daten von der Steuerschaltung. Der Bustreiber kann eine erkannte Weckanforderung über Leitung 28 signalisieren.In each station, for example in the station 14, a bus driver 2 of at least 21, a circuit 22 for processing a protocol for the secure transfer of the individual messages and at least one control circuit is shown in FIG. 23 for handling application-oriented tasks. The bus driver converts the serial data coming from the protocol circuit 22 via line 24 into signal levels or wake-up levels on the bus. The bus driver can be put into idle mode, normal operation or wake-up mode via lines 26 and 27 . Signals received from the bus are transmitted by the bus driver as data via line 25 for further processing to the protocol circuit 22 , which forwards the data to the control circuit 23 . The protocol circuit also receives data from the control circuit. The bus driver can signal a detected wake-up request via line 28 .
Auf dem Leiter kann der Bustreiber gemäß Fig. 3 folgende Pegel einstellen:
On the conductor of the bus drivers, according to Figure 3, the following set level.:
- - einen Ruhepegel V0, der gleichzeitig als logische 0 interpretiert werden kann,a quiescent level V0, which can also be interpreted as logical 0,
- - einen Signalpegel V1, der als logische 1 interpretiert wird,a signal level V1, which is interpreted as logic 1,
-
- einen Weckpegel V2, der gleichermaßen als logische 1 interpretiert wird,
wobei ein Wechsel des Pegels von V0 nach V1 oder umgekehrt nur den Empfangspegel V3 überschreitet und ein Wechsel des Pegels von V0 nach V2 oder umgekehrt beide Empfangspegel V3 und V4 überschreitet.a wake-up level V2, which is equally interpreted as logical 1,
wherein a change in level from V0 to V1 or vice versa only exceeds the reception level V3 and a change in level from V0 to V2 or vice versa exceeds both reception levels V3 and V4.
Fig. 4 zeigt den Aufbau des Bustreibers im Prinzip. Ein Spannungswandler 31 stellt aus einer eingehenden Spannung V7 die Spannungen V1' bzw. V2' für die Ansteuerschaltung 32 zur Verfügung, die ihrerseits bei einer logischen 1 auf der Leitung 24 den Transistor 37 als Spannungsfolger derart schaltet, daß sich auf dem Bus 11 der Pegel V1 bzw. V2 einstellt. Mit der Leitung 27 wird der Schalter 35 von V1' nach V2' und damit von normalem Betrieb auf Weckbetrieb umgeschaltet. Bei einer logischen 0 auf der Leitung 24 bleibt der Transistor 37 ausgeschaltet, und es stellt sich auf dem Bus der durch Widerstand 38 vorgegebene Ruhepegel ein. Fig. 4 shows the structure of the bus driver in principle. A voltage converter 31 provides the voltages V1 'and V2' from an incoming voltage V7 for the control circuit 32 which, in turn, switches the transistor 37 as a voltage follower in the case of a logical 1 on the line 24 such that the level on the bus 11 changes V1 or V2 sets. With the line 27 , the switch 35 is switched from V1 'to V2' and thus from normal operation to wake-up operation. With a logic 0 on line 24 , transistor 37 remains switched off and the quiescent level specified by resistor 38 is established on the bus.
Schaltung 31 stellt außerdem die Referenzspannung V3 zum Empfang der Daten mittels Komparator 33 und Spannung V5 zur Versorgung des Komparators 33 zur Verfügung. Unabhängig davon, ob eine Station mit Signalpegeln oder Weckpegeln sendet, werden die Daten aufgrund der für beide Pegel sinnvollen Empfangsschwelle V3 immer korrekt empfangen und über die Leitung 25 der Protokollschaltung 22 in Fig. 2 zugeführt. Die Schaltung 39 stellt Referenzspannung V4 und Versorgungsspannung V6 zum Empfang der Wecksignale mittels Komparator 34 zur Verfügung, die über die Leitung 28 der Protokollschaltung in Fig. 2 zugeführt werden.Circuit 31 also provides the reference voltage V3 for receiving the data by means of a comparator 33 and voltage V5 for supplying the comparator 33 . Regardless of whether a station transmits with signal levels or wake-up levels, the data is always correctly received due to the reception threshold V3, which makes sense for both levels, and is supplied to the protocol circuit 22 in FIG. 2 via line 25 . Circuit 39 provides reference voltage V4 and supply voltage V6 for receiving the wake-up signals by means of comparator 34 , which are fed via line 28 to the protocol circuit in FIG. 2.
Mittels Leitung 26 kann über den Schalter 36 der Bustreiber in den Ruhebetrieb versetzt werden, indem die Spannungen V1', V2', V3, V5 und V8 abgeschaltet werden und nur der Komparator 34 aktiv bleibt.Line 26 can be used to put the bus driver into idle mode via switch 36 by switching off voltages V1 ', V2', V3, V5 and V8 and leaving only comparator 34 active.
Claims (1)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19704862A DE19704862A1 (en) | 1997-02-10 | 1997-02-10 | System for transferring data |
DE59812904T DE59812904D1 (en) | 1997-02-10 | 1998-02-05 | System for transferring data |
EP98200340A EP0863639B1 (en) | 1997-02-10 | 1998-02-05 | Data transmission system |
US09/020,608 US6674762B2 (en) | 1997-02-10 | 1998-02-09 | System for the transmission of data |
JP02719698A JP4455681B2 (en) | 1997-02-10 | 1998-02-09 | Information transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19704862A DE19704862A1 (en) | 1997-02-10 | 1997-02-10 | System for transferring data |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19704862A1 true DE19704862A1 (en) | 1998-08-13 |
Family
ID=7819737
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19704862A Withdrawn DE19704862A1 (en) | 1997-02-10 | 1997-02-10 | System for transferring data |
DE59812904T Expired - Lifetime DE59812904D1 (en) | 1997-02-10 | 1998-02-05 | System for transferring data |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59812904T Expired - Lifetime DE59812904D1 (en) | 1997-02-10 | 1998-02-05 | System for transferring data |
Country Status (4)
Country | Link |
---|---|
US (1) | US6674762B2 (en) |
EP (1) | EP0863639B1 (en) |
JP (1) | JP4455681B2 (en) |
DE (2) | DE19704862A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1158718A2 (en) * | 2000-05-24 | 2001-11-28 | General Motors Corporation | In-vehicle network management using virtual networks |
WO2022017820A1 (en) * | 2020-07-24 | 2022-01-27 | Robert Bosch Gmbh | Devices for a subscriber station of a serial bus system and method for communication in a serial bus system |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19942368B4 (en) * | 1999-09-04 | 2010-04-29 | Adam Opel Ag | Motor vehicle with controllable in different modes control units |
DE10031891A1 (en) | 2000-06-30 | 2002-01-10 | Bosch Gmbh Robert | Method for operating a device connected to a vehicle communication network |
US7170949B2 (en) | 2002-03-14 | 2007-01-30 | Intel Corporation | Methods and apparatus for signaling on a differential link |
WO2003104037A1 (en) | 2002-06-10 | 2003-12-18 | Philips Intellectual Property & Standards Gmbh | Method and system for switching between subnetwork operation and full network operation |
KR100498340B1 (en) * | 2003-02-04 | 2005-07-01 | 엘지전자 주식회사 | Data reception method for mobile communication device |
KR100584446B1 (en) * | 2004-02-11 | 2006-05-26 | 삼성전자주식회사 | Method for controlling operation mode of mobile terminal in broadband wireless access communication system |
CN101010915B (en) * | 2004-06-30 | 2011-11-02 | Nxp股份有限公司 | Method for the non-bitrate-dependent encoding of digital signals on a bus system |
DE102005013375B4 (en) * | 2005-03-23 | 2014-10-30 | Bayerische Motoren Werke Aktiengesellschaft | Data bus system for motor vehicles and method for operating a data bus system |
EP2309677B1 (en) * | 2009-10-06 | 2012-09-05 | Nxp B.V. | Wake up detector for a bus transceiver |
DE102015102352A1 (en) * | 2015-02-19 | 2016-08-25 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method and device for monitoring a resting state in a motor vehicle |
DE102020110984A1 (en) * | 2020-04-22 | 2021-10-28 | Infineon Technologies Ag | BUS TRANSCEIVER |
CN116632982A (en) * | 2023-07-19 | 2023-08-22 | 宁德时代新能源科技股份有限公司 | Wake-up circuit and battery management system |
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DE3636317A1 (en) * | 1985-10-25 | 1987-04-30 | Yamatake Honeywell Co Ltd | DATA TRANSMISSION SYSTEM WITH TRANSMIT RIGHT REQUEST SIGNALS TRANSMITTED BY A TRANSMISSION LOOP |
ATE59510T1 (en) * | 1986-02-17 | 1991-01-15 | Siemens Ag | CIRCUIT ARRANGEMENT FOR SERIAL DATA TRANSMISSION BETWEEN SEVERAL SUBSCRIBERS. |
JP2805151B2 (en) * | 1989-02-15 | 1998-09-30 | 古河電気工業株式会社 | Fault diagnosis device |
US4965550A (en) * | 1989-10-30 | 1990-10-23 | Chrysler Corporation | Automatic wake-up circuit arrangement for a single wire multiplex switch monitoring system |
JP2752030B2 (en) * | 1993-04-16 | 1998-05-18 | 沖電気工業株式会社 | Signal transmission / reception device in local area network line |
US5790946A (en) * | 1993-07-15 | 1998-08-04 | Rotzoll; Robert R. | Wake up device for a communications system |
JPH0774763A (en) * | 1993-09-03 | 1995-03-17 | Furukawa Electric Co Ltd:The | Operating state transition method for multiplex transmission system |
DE4342036C2 (en) * | 1993-12-09 | 2002-10-24 | Conti Temic Microelectronic | data bus system |
US5463658A (en) * | 1994-03-23 | 1995-10-31 | Intel Corporation | Low impact collision detection method |
DE19523031A1 (en) * | 1995-06-08 | 1996-12-12 | Philips Patentverwaltung | System for transmitting data over a differential bus |
US5650757A (en) * | 1996-03-27 | 1997-07-22 | Hewlett-Packard Company | Impedance stepping for increasing the operating speed of computer backplane busses |
-
1997
- 1997-02-10 DE DE19704862A patent/DE19704862A1/en not_active Withdrawn
-
1998
- 1998-02-05 EP EP98200340A patent/EP0863639B1/en not_active Expired - Lifetime
- 1998-02-05 DE DE59812904T patent/DE59812904D1/en not_active Expired - Lifetime
- 1998-02-09 JP JP02719698A patent/JP4455681B2/en not_active Expired - Fee Related
- 1998-02-09 US US09/020,608 patent/US6674762B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1158718A2 (en) * | 2000-05-24 | 2001-11-28 | General Motors Corporation | In-vehicle network management using virtual networks |
EP1158718A3 (en) * | 2000-05-24 | 2004-11-10 | General Motors Corporation | In-vehicle network management using virtual networks |
WO2022017820A1 (en) * | 2020-07-24 | 2022-01-27 | Robert Bosch Gmbh | Devices for a subscriber station of a serial bus system and method for communication in a serial bus system |
Also Published As
Publication number | Publication date |
---|---|
JPH10233793A (en) | 1998-09-02 |
US6674762B2 (en) | 2004-01-06 |
EP0863639A1 (en) | 1998-09-09 |
DE59812904D1 (en) | 2005-08-11 |
EP0863639B1 (en) | 2005-07-06 |
US20030208700A1 (en) | 2003-11-06 |
JP4455681B2 (en) | 2010-04-21 |
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Legal Events
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Owner name: PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH, 2233 |
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